ffmpeg chromium glue

media/ffmpeg/ffmpeg_common.cc

Index: media/ffmpeg/ffmpeg_common.cc
===================================================================
--- media/ffmpeg/ffmpeg_common.cc	(revision 91170)
+++ media/ffmpeg/ffmpeg_common.cc	(working copy)
@@ -210,19 +210,21 @@
   DCHECK(format_context);
 
   // Iterate each stream and destroy each one of them.
-  int streams = format_context->nb_streams;
-  for (int i = 0; i < streams; ++i) {
-    AVStream* stream = format_context->streams[i];
+  if (format_context->streams) {
+    int streams = format_context->nb_streams;
+    for (int i = 0; i < streams; ++i) {
+      AVStream* stream = format_context->streams[i];
 
-    // The conditions for calling avcodec_close():
-    // 1. AVStream is alive.
-    // 2. AVCodecContext in AVStream is alive.
-    // 3. AVCodec in AVCodecContext is alive.
-    // Notice that closing a codec context without prior avcodec_open() will
-    // result in a crash in FFmpeg.
-    if (stream && stream->codec && stream->codec->codec) {
-      stream->discard = AVDISCARD_ALL;
-      avcodec_close(stream->codec);
+      // The conditions for calling avcodec_close():
+      // 1. AVStream is alive.
+      // 2. AVCodecContext in AVStream is alive.
+      // 3. AVCodec in AVCodecContext is alive.
+      // Notice that closing a codec context without prior avcodec_open() will
+      // result in a crash in FFmpeg.
+      if (stream && stream->codec && stream->codec->codec) {
+        stream->discard = AVDISCARD_ALL;
+        avcodec_close(stream->codec);
+      }
     }
   }